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Imaging to measure renal function is done by attaching 99m Tc to mercaptoacetyl triglycine ; this procedure is known as a MAG3 scan. Technetium-99m (Tc-99m) can be readily detected in the body by medical equipment because it emits 140.5 keV gamma rays (these are about the same wavelength as emitted by conventional X-ray diagnostic equipment ...
The metastable technetium-99m (99m Tc) is a short-lived (half-life about 6 hours) nuclear isomer used in nuclear medicine, produced from molybdenum-99. It decays by isomeric transition to technetium-99, a desirable characteristic, since the very long half-life and type of decay of technetium-99 imposes little further radiation burden on the body.
Sodium pertechnetate is the inorganic compound with the formula NaTcO 4. This colourless salt contains the pertechnetate anion, TcO − 4 that has slightly distorted tetrahedron symmetry both at 296 K and at 100 K [ 2 ] while the coordination polyhedron of the sodium cation is different from typical for scheelite structure.
In particular it is used to carry the 99m Tc isotope (half-life 6 hours) which is commonly used in nuclear medicine in several nuclear scanning procedures. Pertechnetate is poorly hydrated as [TcO 4 (H 2 O) n ] - and [TcO 4 (H 2 O) n-m ] - [H 3 O] + m (n = 1–50, m = 1–4) clusters that have been demonstrated by simulation with DFT.
Technetium-99m (99m Tc) is a metastable nuclear isomer which emits gamma rays which can be detected by a gamma camera. When it is attached to exametazime, this allows 99m Tc to be taken up by brain tissue in a manner proportional to brain blood flow, in turn allowing brain blood flow to be assessed with the nuclear gamma camera.
Pertechnetate is one of the most available forms of technetium. It is structurally related to permanganate. The most prevalent form of technetium that is easily accessible is sodium pertechnetate, Na[TcO 4]. The majority of this material is produced by radioactive decay from [99 MoO 4] 2−: [1] [2] [99 MoO 4] 2− → [99m TcO 4] − + e −
Technetium-99m: A Crucial Diagnostic Tool for Modern Medicine. Technetium-99m is one of the most widely used radiopharmaceuticals in diagnostic imaging due to its ability to provide high-quality, real-time images of internal bodily processes. Its use in various scans, such as bone, renal, cardiac, and neurological scans, makes it indispensable ...
The typical procedure involves use of Technetium-99m colloid, or in some cases pertechnetate. The colloid is prepared with an activity of approximately 20 megabecquerels in 1 millilitre (ml). Patients place their head in a support and chin rest and a single drop of 0.01 ml is delivered to each eye.